CN207636490U - A kind of optics chlorophyll sensor - Google Patents
A kind of optics chlorophyll sensor Download PDFInfo
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- CN207636490U CN207636490U CN201721859774.5U CN201721859774U CN207636490U CN 207636490 U CN207636490 U CN 207636490U CN 201721859774 U CN201721859774 U CN 201721859774U CN 207636490 U CN207636490 U CN 207636490U
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- light
- guiding pillar
- optical filter
- optics
- chlorophyll
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Abstract
The utility model provides a kind of optics chlorophyll sensor, including a shell and the LED light being installed in shell, the first optical filter, the first light-guiding pillar, the second light-guiding pillar, the second optical filter and silicon photocell, first light-guiding pillar and the second light-guiding pillar are quartz glass light-guiding pillar, first light-guiding pillar and the second light-guiding pillar are in parallelepiped structure, and symmetrical along axis Y；The outer surface of first light-guiding pillar and the second light-guiding pillar is light refraction face, has silver coating on the light refraction face；The modulation blue light that the LED light is sent out passes through the first optical filter successively and the first light-guiding pillar is injected in water body, and the feux rouges that water Determination of Chlorophyll is generated by blue light excitation passes through the second light-guiding pillar and the second optical filter directive silicon photocell successively.The utility model substitutes original optical fiber light-guiding light path using quartz glass light-guiding pillar, influence of the temperature to measured value is fundamentally solved, to improve the measurement accuracy of optics chlorophyll sensor.
Description
Technical field
The utility model is related to a kind of sensor more particularly to a kind of optics chlorophyll sensors.
Background technology
Common chlorophyll sensor optical path conduction generally uses telecommunication optical fiber to conduct on existing market.This mode exists
Two apparent disadvantages：
1, since optical fiber is chronically exposed in water, optical fiber quality can be influenced, the conduction efficiency of optical fiber will continuously decrease；
2, chlorophyll on the market is popped one's head in measurement process, since fiber optic conduction rate is affected by temperature larger, measured value
The amplitude varied with temperature is very big, will influence the measurement accuracy of sensor.
Since the central principle of optical method chlorophyll sensor is exactly research transmitting light and receives the relativeness of light, optical fiber
Characteristic severely impacted the measurement accuracy of optical method chlorophyll sensor.
Invention content
The technical problems to be solved in the utility model is to provide a kind of optics chlorophyll sensor, using quartz glass
Light-guiding pillar substitutes original optical fiber light-guiding light path, influence of the temperature to measured value is fundamentally solved, to improve optics
The measurement accuracy of chlorophyll sensor.
The utility model is realized in this way：
A kind of optics chlorophyll sensor, including a shell and be installed in shell LED light, the first optical filter,
One light-guiding pillar, the second light-guiding pillar, the second optical filter and silicon photocell, first light-guiding pillar and the second light-guiding pillar are quartzy glass
Glass light-guiding pillar, first light-guiding pillar and the second light-guiding pillar are in parallelepiped structure, and symmetrical along axis Y；It is described
The outer surface of first light-guiding pillar and the second light-guiding pillar is light refraction face, has silver coating on the light refraction face；
The modulation blue light that the LED light is sent out passes through the first optical filter successively and the first light-guiding pillar is injected in water body, in water
The feux rouges that chlorophyll is generated by blue light excitation passes through the second light-guiding pillar and the second optical filter directive silicon photocell successively.
Further, it is 30 ° to have angle α, the angle α between first light-guiding pillar and the second light-guiding pillar.
Further, first light-guiding pillar and the second light-guiding pillar are fixed by a light path fixed seat.
Further, first optical filter is 460nm optical filters, and second optical filter is 680nm optical filters.
Further, MCU, signal processing unit and ADC converting units, the MCU difference are also equipped in the shell
It is connect with signal processing unit, ADC converting units, LED light and silicon photocell.
Further, the shell is stainless steel casing.
The utility model has the advantage of：Chlorophyll by the optics chlorophyll sensor of the utility model and on the market is visited
Head compares experiment, from, as can be seen that chlorophyll probe on the market is in measurement process, measured value is with temperature in experimental data
The amplitude of variation is very big.And the chlorophyll sensor of the utility model is used, during measurement, measured value does not have with temperature
Apparent relationship.From this it can be concluded that the optics chlorophyll sensor of the utility model can efficiently control temperature pair
The influence of measured value, to reach high-acruracy survey requirement.
Description of the drawings
The utility model is further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is a kind of structural schematic diagram of optics chlorophyll sensor of the utility model.
Fig. 2 is the stereogram of the second light-guiding pillar in the utility model.
Fig. 3 is the front view of the second light-guiding pillar in the utility model.
Fig. 4 is the vertical view of the second light-guiding pillar in the utility model.
Fig. 5 is a kind of index path of optics chlorophyll sensor of the utility model.
Fig. 6 is a kind of data processing schematic diagram of optics chlorophyll sensor of the utility model.
Figure label explanation：
100- sensors, 1- shells, 2-LED lamps, the first optical filters of 3-, the first light-guiding pillars of 4-, the second light-guiding pillars of 5-, 6-
Two optical filters, 7- silicon photocells, 8- film plating layers, 9- light paths fixed seat, 10-MCU, 11- signal processing unit, 12-ADC conversions are single
Member；200- water bodys.
Specific implementation mode
The utility model is made with reference to specific embodiment and being further described in detail, but the structure of the utility model
It is not limited in following embodiment.
In view of the transmitting light and reception light of optical method chlorophyll sensor need to reach certain angular relationship (influence calculation
Method), light intensity, under the factors such as structure size, preferentially design light path using the principle of refraction of light path.
Refering to Figure 1, a kind of optics chlorophyll sensor 100 of the utility model, including a shell 1 and installation
LED light 2, the first optical filter 3, the first light-guiding pillar 4, the second light-guiding pillar 5, the second optical filter 6 in shell 1 and silicon photocell 7,
First optical filter 3 is 460nm optical filters, and the light of 460nm is allow to penetrate optical filter, and second optical filter 6 is 680nm
Optical filter allows the light of 680nm to penetrate optical filter；The shell is stainless steel casing, corrosion-resistant, is not easy to get rusty；
In the structure of first light-guiding pillar, 4 and second light-guiding pillar 5：As shown in Figures 2 to 4, first light-guiding pillar 4
It is quartz glass light-guiding pillar with the second light-guiding pillar 5, light-guiding pillar uses quartz glass, since quartz glass hardness is greatly up to Mohs
Seven grades, have low high temperature resistant, the coefficient of expansion, resistance to heat shocks, chemical stability and electrical insulation capability good, and ultraviolet light can be penetrated
And infrared ray, it can fundamentally solve influence of the temperature to measured value；First light-guiding pillar, 4 and second light-guiding pillar 5 is in flat
Row hexahedron structure, and it is symmetrical along axis Y, there is angle α, institute between first light-guiding pillar, 4 and second light-guiding pillar 5
It is 30 ° to state angle α, and the angle α 1 of the second light-guiding pillar 5 and axis Y is 15 °, and 30 ° of angle α is to measuring best angle；
The outer surface of first light-guiding pillar, 4 and second light-guiding pillar 5 is light refraction face, has film plating layer 8 on the light refraction face,
The film plating layer 8 is silver coating, and electroplate can be guide-lighting, and light is reflected through the surface energy.
In optic path process：As shown in figure 5, first light-guiding pillar, 4 and second light-guiding pillar 5 is fixed by a light path
Seat 9 is fixed, and the modulation blue light that the LED light 2 is sent out passes through the first optical filter 3 successively and the first light-guiding pillar 4 injects water body
In, the feux rouges that water Determination of Chlorophyll is generated by blue light excitation passes through 6 directive silicon photocell of the second light-guiding pillar 5 and the second optical filter successively
7.The light that blue violet light LED light 2 is launched is after the optical filtering of the first optical filter 3 (460nm optical filters), in drawing for the first light-guiding pillar 4
The water body 200 outside lower light directive sensor 100 is led, after the Chlorophyll absorption light in water, fluorescence excitation phenomenon is generated and releases
Feux rouges is released, feux rouges is after the optical filtering of the second optical filter 6 (680nm optical filters) under the guiding of the second light-guiding pillar 5, directive silicon light
Battery 7 feeds back voltage signal, that is, forms the process of a 200 Determination of Chlorophyll content of fluorescence measurement water body.
In data processing：Turn as shown in fig. 6, being also equipped with MCU10, signal processing unit 11 and ADC in the shell 1
Unit 12 is changed, the MCU10 is connect with signal processing unit 11, ADC converting units 12, LED light 2 and silicon photocell 7 respectively；
MCU10 exports the pwm signal of modulating frequency, which is used as 2 illuminated switch signal of LED light simultaneously, and is used for and silicon photocell 7
The AC for receiving signal synchronizes conversion DC, and 460nm light waves are injected water body by the shining by certain frequency according to pwm signal of LED light 2
In 200, the chlorophyll light in water body 200 influences transmitting 680nm light waves and passes to silicon photocell 7, and silicon photocell 7 generates electric signal
Be transferred to MCU10, ADC converting units 12 by AC signals and PWM synchronize be converted into DC signals, ADC converting units 12 will acquire
The signal strength arrived is converted to chlorophyll concentration value, to complete measurement of the sensor 100 to chlorophyll through MCU10 calculating.
Chlorophyll probe by the optics chlorophyll sensor of the utility model and on the market compares experiments experiment step
For：
The first step carries out light path design, is responsible for designing the light path for meeting chlorophyll test philosophy by optical engineer；
Second step assembles 10 newly-designed chlorophyll model machines (using glass leaded light principle) and installation 10 is on the market
Chlorophyll model machine (optical fiber light-guiding principle), this 20 model machines all using identical hardware and software, exclude software, hardware pair
As a result influence；
Third walks, and 20 model machines, which are put into unified water sample, to be tested；
4th step, setting water temperature change, and record the curve that each model machine varies with temperature；
5th step, analysis and summary data, it was therefore concluded that.
In conclusion the advantages of the utility model, is as follows：
Chlorophyll probe by the optics chlorophyll sensor of the utility model and on the market compares experiment, from testing number
According to upper as can be seen that chlorophyll on the market is popped one's head in measurement process, the amplitude that measured value varies with temperature is very big.And it uses
The chlorophyll sensor of the utility model, during measurement, measured value does not have apparent relationship with temperature.It is possible thereby to
Go out conclusion, the optics chlorophyll sensor of the utility model can efficiently control influence of the temperature to measured value, to reach
High-acruracy survey requirement.
Although the foregoing describe specific embodiment of the present utility model, those familiar with the art answers
Working as understanding, we are merely exemplary described specific embodiment, rather than for the limit to the scope of the utility model
Fixed, those skilled in the art modification and variation equivalent made by the spirit according to the utility model all should
Cover in the scope of the claimed protection of the utility model.
Claims (6)
1. a kind of optics chlorophyll sensor, including a shell and be installed in shell LED light, the first optical filter, first
Light-guiding pillar, the second light-guiding pillar, the second optical filter and silicon photocell, it is characterised in that：First light-guiding pillar and the second light-guiding pillar
It is quartz glass light-guiding pillar, first light-guiding pillar and the second light-guiding pillar are in parallelepiped structure, and symmetrical along axis Y
Distribution；The outer surface of first light-guiding pillar and the second light-guiding pillar is light refraction face, is had on the light refraction face silver-plated
Layer；
The modulation blue light that the LED light is sent out passes through the first optical filter successively and the first light-guiding pillar is injected in water body, and the water middle period is green
The feux rouges that element is generated by blue light excitation passes through the second light-guiding pillar and the second optical filter directive silicon photocell successively.
2. a kind of optics chlorophyll sensor as described in claim 1, it is characterised in that：First light-guiding pillar and second is led
It is 30 ° to have angle α, the angle α between light beam.
3. a kind of optics chlorophyll sensor as described in claim 1, it is characterised in that：First light-guiding pillar and second is led
Light beam is fixed by a light path fixed seat.
4. a kind of optics chlorophyll sensor as described in claim 1, it is characterised in that：First optical filter is 460nm
Optical filter, second optical filter are 680nm optical filters.
5. a kind of optics chlorophyll sensor as described in claim 1, it is characterised in that：Be also equipped in the shell MCU,
Signal processing unit and ADC converting units, the MCU respectively with signal processing unit, ADC converting units, LED light and silicon photoelectricity
Pond connects.
6. a kind of optics chlorophyll sensor as described in claim 1, it is characterised in that：The shell is stainless steel casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721859774.5U CN207636490U (en) | 2017-12-27 | 2017-12-27 | A kind of optics chlorophyll sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721859774.5U CN207636490U (en) | 2017-12-27 | 2017-12-27 | A kind of optics chlorophyll sensor |
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| CN207636490U true CN207636490U (en) | 2018-07-20 |
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| CN201721859774.5U Active CN207636490U (en) | 2017-12-27 | 2017-12-27 | A kind of optics chlorophyll sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085706A (en) * | 2018-07-23 | 2018-12-25 | 华南师范大学 | A kind of photoresponse device based on chlorophyll doping |
| CN110865064A (en) * | 2019-12-24 | 2020-03-06 | 河北先河环保科技股份有限公司 | Chlorophyll detector |
| CN111239092A (en) * | 2020-03-12 | 2020-06-05 | 中国医学科学院阜外医院 | Optical fiber type CO2、O2Concentration rapid acquisition probe |
| CN112033902A (en) * | 2020-08-10 | 2020-12-04 | 南京奇崛电子科技有限公司 | Waterproof and pressure-resistant optical sensor |
-
2017
- 2017-12-27 CN CN201721859774.5U patent/CN207636490U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085706A (en) * | 2018-07-23 | 2018-12-25 | 华南师范大学 | A kind of photoresponse device based on chlorophyll doping |
| CN110865064A (en) * | 2019-12-24 | 2020-03-06 | 河北先河环保科技股份有限公司 | Chlorophyll detector |
| CN111239092A (en) * | 2020-03-12 | 2020-06-05 | 中国医学科学院阜外医院 | Optical fiber type CO2、O2Concentration rapid acquisition probe |
| CN112033902A (en) * | 2020-08-10 | 2020-12-04 | 南京奇崛电子科技有限公司 | Waterproof and pressure-resistant optical sensor |
| WO2022032713A1 (en) * | 2020-08-10 | 2022-02-17 | 南京奇崛电子科技有限公司 | Waterproof and pressure-resistant optical sensor |
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